Because I didn't know how to use my coins.
It all started with discovering the futures market. High leverages!
Your coins are not supposed to be used like that only.
Bitcoin is a long term investment.
It is valuable because it provides a protection against inflation, and it is also a p2p cash system.
You should never put all your coins in a future market trading. You can do that to try to increment your position, but don't forget why bitcoin exists and why it is valuable.